User Tracking selecting subnets

It's set to collect do a mojor acquision every 4 hours and minors every 30 minutes.

The data I see in CM includes subnets that I wanted to exclude, so I am not sure what is going on. I made sure to apply the settings, and I checked the aniserver.properties and can see my list of subnets in it.

We would like to limit the tracking to just our coporate network, and keep the tracking out of the datacenter (for now, until we are sure we won't impact production in any way) . . .

Also when I add a new device (and it has a new subnet) will user tracking complain that I need to run the initial collection of subnets again?